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<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        h3~p{
            color: salmon;
        }
    </style>
</head>
<body>
    <!-- 兄弟选择器是选择元素之后的所有的兄弟元素，不管它们的位置关系，只要它们是兄弟元素，就能被选中。 -->
    <p>hahahahahahhahahaah</p>
    <h3>This is the first heading</h3>
    <p>This is the first paragraph.</p>
    <p>This is the second paragraph.</p>
    <div>我是一个容器元素</div>
    <p>This is the third paragraph.</p>
</body>
</html>